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1992-09-06
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CAL(1) UNIX Reference Manual CAL(1)
NNAAMMEE
ccaall - displays a calendar
SSYYNNOOPPSSIISS
ccaall [--jjyy] [_m_o_n_t_h [_y_e_a_r]]
DDEESSCCRRIIPPTTIIOONN
CCaall displays a simple calendar. If arguments are not specified, the cur-
rent month is displayed. The options are as follows:
--jj Display julian dates (days one-based, numbered from January 1).
--yy Display a calendar for the current year.
A single parameter specifies the year (1 - 9999) to be displayed; note
the year must be fully specified: ``cal 89'' will _n_o_t display a calendar
for 1989. Two parameters denote the month (1 - 12) and year. If no pa-
rameters are specified, the current month's calendar is displayed.
A year starts on Jan 1.
The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd
of September. By this time, most countries had recognized the reforma-
tion (although a few did not recognize it until the early 1900's.) Ten
days following that date were eliminated by the reformation, so the cal-
endar for that month is a bit unusual.
HHIISSTTOORRYY
A ccaall command appeared in Version 6 AT&T UNIX.
BSD Experimental June 17, 1991 1